Yoo Hee-Yeol (born 19.04.1970) is a signer song writer and a composer currently working under the moniker of "Toy", his project band. Yoo Heel Yeol has so far released three albums with his own name, a short piece contemporary classical album "익숙한 그집앞/ At the Gate of that Familar House" in 2000, an electronic lounge compilation "Walk Around the Corner" in 2002 and a modern rock and instrumental compilation "여름날/ Summer Days" in 2008.

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